Monitoring system, base station and control method thereof

ABSTRACT

A monitoring system, a base station, and a control method thereof are provided. The monitoring system includes a drone and a base station. The drone includes a main body and at least two leg holders extending from the main body. The base station includes a platform and a positioning mechanism. The platform has a horizontal plate, and the drone is placed on the platform. The positioning mechanism includes at least two movement members. The movement members are movably disposed on the platform and movable between a first position and a second position. When the movement members are located at the second position, the movement members hold and fix the leg holders of the drone, each of the leg holders forms an inclined angle with respect to the horizontal plate, and the inclined angle is less than 90 degrees.

CROSS-REFERENCE TO RELATED APPLICATION

This application claims the priority benefit of China application serialno. 201910079862.0, filed on Jan. 28, 2019. The entirety of theabove-mentioned patent application is hereby incorporated by referenceherein and made a part of this specification.

BACKGROUND OF THE INVENTION Field of the Invention

The invention relates to a technique for monitoring a drone, andparticularly relates to a monitoring system for a drone, a base station,and a control method thereof.

Description of Related Art

Monitoring techniques are used in various industries to monitorequipment, buildings, or other assets. Research institutions may monitoranimals or ecosystems, and government institutions may also monitorroads, parks, or entrances/exits. To eliminate human factors, automaticmonitoring is available nowadays. Automatic monitoring equipment ismounted in a designated place to monitor the environment. The automaticmonitoring equipment may include a drone and a charging device. However,the conventional automatic monitoring equipment still has issues such aslanding stability of the drone and usage mobility. Regarding the landingstability of the drone, the process in which the drone is landed on thecharging device may be affected by the cross wind in the surroundings,which makes landing less stable. Regarding the usage mobility, since thecharging device is normally disposed at a fixed place, the monitoringregion may be limited to the range of navigation of the drone.

The information disclosed in this Background section is only forenhancement of understanding of the background of the describedtechnology and therefore it may contain information that does not formthe prior art that is already known to a person of ordinary skill in theart. Further, the information disclosed in the Background section doesnot mean that one or more problems to be resolved by one or moreembodiments of the invention were acknowledged by a person of ordinaryskill in the art.

SUMMARY

The invention provides a monitoring system, a base station, and acontrol method thereof providing a movable base station as well asmultiple fixing and positioning-assisting mechanisms.

Other objectives and advantages of the present invention can be furtherillustrated by the technical features broadly embodied and described asfollows.

In order to achieve one or a portion of or all of the objectives orother objectives, an embodiment of the invention provides a monitoringsystem including a drone and a base station. The drone includes a mainbody and at least two leg holders extending from the main body. The basestation includes a platform and a positioning mechanism. The platformhas a horizontal plate, and the drone is placed on the platform. Thepositioning mechanism includes at least two movement members. Themovement members are movably disposed on the platform and movablebetween a first position and a second position. When the movementmembers are located at the second position, the movement members holdand fix the leg holders of the drone, each of the leg holders forms aninclined angle with respect to the horizontal plate, and the inclinedangle is less than 90 degrees.

In order to achieve one or a portion of or all of the objectives orother objectives, an embodiment of the invention provides a base stationincluding a platform and a positioning mechanism. The platform has ahorizontal plate. A drone is placed on the platform, and the droneincludes a main body and leg holders. The positioning mechanism includesat least two movement members. The movement members are movably disposedon the platform and movable between a first position and a secondposition. When the movement members are located at the second position,the movement members hold and fix the leg holders of the drone, each ofthe leg holders forms an inclined angle with respect to the horizontalplate, and the inclined angle is less than 90 degrees.

In order to achieve one or a portion of or all of the objectives orother objectives, an embodiment of the invention provides a controlmethod. The control method includes the following: controlling to placea drone on a platform, wherein the drone includes a main body and atleast two leg holders, and the platform has a horizontal plate; and inresponse to the drone being placed on the platform, controlling at leasttwo movement members disposed on the platform to move from a firstposition to a second position. When the movement members are located atthe second position, the movement members hold and fix the leg holdersof the drone. Each of the leg holders forms an inclined angle withrespect to the horizontal plate, and the inclined angle is less than 90degrees.

According to the embodiments of the invention, special angles and buffermembers are set and provided at the positioning mechanism of the basestation and the leg holders of the drone, and then the drone is fixed.Besides, the base station according to the embodiments of the inventionhas the moving vehicle and may be moved to a specific place or location.Accordingly, the range of navigation is significantly expanded. In orderto prevent the drone from wobbling laterally or hopping or shakingvertically when the moving vehicle is moving, a buffering apparatus isprovided between the platform on which the drone is placed and themoving vehicle, and a buffer member is also provided on the inner sideof the protective cover. Accordingly, a triple shock suppressingmechanism is provided. Meanwhile, to allow the drone to be landedsmoothly when the moving vehicle is moving, satellite positioning, IRpositioning, and mechanical assisting positioning are successivelyadopted in the embodiments of the invention to guide the drone to moveto a specific position.

Other objectives, features and advantages of the present invention willbe further understood from the further technological features disclosedby the embodiments of the present invention wherein there are shown anddescribed preferred embodiments of this invention, simply by way ofillustration of modes best suited to carry out the invention.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings are included to provide a furtherunderstanding of the invention, and are incorporated in and constitute apart of this specification. The drawings illustrate embodiments of theinvention and, together with the description, serve to explain theprinciples of the invention.

FIG. 1 is a block diagram illustrating components of a monitoring systemaccording to an embodiment of the invention.

FIGS. 2A to 2D are schematic views illustrating a monitoring systemaccording to an embodiment of the invention.

FIGS. 3A to 3B are schematic views illustrating a platform and apositioning apparatus of a base station according to an embodiment ofthe invention.

FIGS. 4A to 4B are schematic views illustrating a buffering apparatusand a positioning apparatus of a base station according to an embodimentof the invention.

FIGS. 5A to 5D are schematic views illustrating that a drone sets off topatrol according to an embodiment of the invention.

FIGS. 6A to 6F are schematic views illustrating that a drone returnsaccording to an embodiment of the invention.

FIGS. 7A to 7B are schematic views illustrating a base station accordingto another embodiment of the invention.

FIGS. 8A to 8D are schematic views illustrating that a drone sets off topatrol according to another embodiment of the invention.

FIGS. 9A to 9E are schematic views illustrating that a drone returnsaccording to another embodiment of the invention.

DESCRIPTION OF THE EMBODIMENTS

In the following detailed description of the preferred embodiments,reference is made to the accompanying drawings which form a part hereof,and in which are shown by way of illustration specific embodiments inwhich the invention may be practiced. In this regard, directionalterminology, such as “top,” “bottom,” “front,” “back,” etc., is usedwith reference to the orientation of the Figure(s) being described. Thecomponents of the present invention can be positioned in a number ofdifferent orientations. As such, the directional terminology is used forpurposes of illustration and is in no way limiting. On the other hand,the drawings are only schematic and the sizes of components may beexaggerated for clarity. It is to be understood that other embodimentsmay be utilized and structural changes may be made without departingfrom the scope of the present invention. Also, it is to be understoodthat the phraseology and terminology used herein are for the purpose ofdescription and should not be regarded as limiting. The use of“including,” “comprising,” or “having” and variations thereof herein ismeant to encompass the items listed thereafter and equivalents thereofas well as additional items. Unless limited otherwise, the terms“connected,” “coupled,” and “mounted” and variations thereof herein areused broadly and encompass direct and indirect connections, couplings,and mountings. Similarly, the terms “facing,” “faces” and variationsthereof herein are used broadly and encompass direct and indirectfacing, and “adjacent to” and variations thereof herein are used broadlyand encompass directly and indirectly “adjacent to”. Therefore, thedescription of “A” component facing “B” component herein may contain thesituations that “A” component directly faces “B” component or one ormore additional components are between “A” component and “B” component.Also, the description of “A” component “adjacent to” “B” componentherein may contain the situations that “A” component is directly“adjacent to” “B” component or one or more additional components arebetween “A” component and “B” component. Accordingly, the drawings anddescriptions will be regarded as illustrative in nature and not asrestrictive.

FIG. 1 is a block diagram illustrating components of a monitoring system1 according to an embodiment of the invention. Referring to FIG. 1, themonitoring system 1 includes a drone 10 and a base station 50. When thedrone 10 performs automatic monitoring in a field, the drone 10 mayrepeat two operation processes, i.e., cruising detection and returningfor charging. The base station 50 may automatically open a protectivecover after the drone 10 is fully charged at the base station 50, whichfacilitates that the drone 10 may fly out of the base station 50 toperform cruising detection. When returning, the drone 10 may notify thebase station 50 to open the protective cover. After the drone 10 islanded on the base station 50, the base station 50 closes the protectivecover and charges the drone 10.

The drone 10 at least includes, but is not limited to, a communicationtransceiver 11, a satellite positioner 13, an IR detector 15, and aprocessor 19. FIG. 2A is a schematic view of the drone 10. Regarding theappearance, the drone 10 includes a main body 12 and at least two legholders (gears) 12A and 12B extending from the main body 12. It shouldbe noted that, in other embodiments, the drone 10 may have more legholders 12A and 12B based on different design requirements. The legholders 12A and 12B serve to support the drone 10.

The communication transceiver 11 may be a transceiver compatible withvarious wireless communication technologies, such as Wi-Ficommunication, 4G communication, 5G communication, or mobilecommunication technologies that emerge thereafter.

The satellite positioner 13 may be a transceiver compatible with varioussatellite positioning systems, such as the BeiDou Navigation SatelliteSystem, the Global Positioning System (GPS), the Galileo PositioningSystem, etc.

The IR detector 15 may be an infrared ray camera, an infrared ray videocamera, or an infrared ray receiver. In the embodiment, the IR detector15 receives or detects an infrared ray, and determines a relativedistance to an infrared ray emitting source accordingly.

The processor 19 is coupled to the communication transceiver 11, thesatellite positioner 13, and the IR detector 15, and may be a centralprocessing unit (CPU), a microcontroller, a chip programmablecontroller, an application-specific integrated circuit (ASIC), a fieldprogrammable gate array (FPGA), other similar components, or acombination thereof. In the embodiment, the processor 19 serves tocontrol all the operations of the drone 10.

The base station 50 at least includes, but is not limited to, acommunication transceiver 51, an input apparatus 52, a satellitepositioner 53, an IR positioner 54, a positioning apparatus 55, aprotective cover 56, a moving vehicle 57, and a processor 59. FIGS. 2Bto 2D are schematic views of the base station 50. The main body of thebase station 50 is disposed on the moving vehicle 57, and a platform 58is disposed on the main body. Left and right covers 561 (i.e., theprotective cover 56) pivotally rotatable with respect to the platform 58are disposed above the main body of the base station 50. When the leftand right covers 561 are open (e.g., a state in which the protectivecover 56 is at an open position as shown in FIG. 2B), the platform 58 isexposed so that the drone 10 may leave from the platform 58. When thetwo covers 561 are closed (e.g., a state in which the protective cover56 is at a closed position as shown in FIG. 2D), the main body of thebase station 50, the platform 58, and the surrounding inner side of theleft and right covers 561 form an internal space, so that the drone 10located in the internal space is not affected by the externalenvironment.

The input apparatus 52 may be a touch panel, a keyboard, a mouse, abutton, a switch, etc., and is an apparatus for receiving the user'soperation (e.g., clicking, pressing, rotating, sliding, etc.).

Examples of the satellite positioner 53 may be referred to thedescriptions about the satellite positioner 13. Therefore, details inthis regard will not be repeated in the following.

The IR positioner 54 serves to emit an infrared ray. In an embodiment,the IR positioner 54 further provides a directional pattern through theinfrared ray. The directional pattern serves to indicate a specificdirection (e.g., the front, rear, etc., of the moving vehicle 57).

The positioning apparatus 55 at least includes, but is not limited to, apositioning controller 551 and a positioning mechanism 553. Thepositioning controller 551 may be a processor, a chip, or a circuit. Thepositioning mechanism 553 includes a movable component (e.g., a rod, acarriage, etc.) and a motor which serves to control the movement of themovable component. The positioning controller 551 is coupled to thepositioning mechanism 553 to control the operation of the positioningmechanism 553 and thereby fix the position of the drone 10.

FIGS. 3A and 3B are schematic views of the positioning mechanism 553. Inthe embodiment, the left-right direction on the surface of the drawingis defined as the lateral direction, and the upper-lower direction ofthe surface of the drawing is defined as the longitudinal direction. Thepositioning mechanism 553 includes a lateral movement member 5531laterally movably disposed on the platform 58 and a longitudinalmovement member 5532 longitudinally movably disposed on the platform 58.The positioning controller 551 may respectively drive the lateralmovement member 5531 and the longitudinal movement member 5532 throughtwo motors to move between a first position (as shown in FIG. 3A) and asecond position (closer to the center of the platform 58 than the firstposition, as shown in FIG. 3B).

Examples of the protective cover 56 may be referred to the schematicviews of FIGS. 2B to 2D. In the embodiment, the protective cover 56includes the left and right covers 561 that are pivotally disposed tothe platform 58 or the moving vehicle 57. The left and right covers 561are expanded along two opposite directions away from each other to bemoved to the open position shown in FIG. 2B and open the platform 58(i.e., the internal space is open), and the left and right covers 561are closed along two opposite directions toward each other to be movedto the closed position shown in FIG. 2D, so as to shield the platform58.

The moving vehicle 57 may be a car as shown in FIGS. 2B to 2D, a boat,or an airplane. For the ease of descriptions, the embodiments of theinvention are described by using car as an example. However, thoseapplying the invention may derive other examples through appropriatemodifications according to the requirements.

To reinforce the stability of placement of an object on the platform 58(to avoid wobbling or hopping in the horizontal or vertical direction),in an embodiment, a buffering apparatus 581 (e.g., a buffer pad, ahydraulic buffer, a pneumatic buffer, a spring buffer, etc.) may bedisposed between the platform 58 and the moving vehicle 57, as shown inFIG. 4A (illustrating from the perspective in which the back surface ofthe platform 58 faces toward the top), so as to cancel out theshock/impact taken when the drone 10 is placed inside the moving vehicle57 as the moving vehicle 57 moves. At least one shock absorber may alsobe disposed at the main body of the moving vehicle 57 (e.g., disposedbetween the transmission shaft and the main body). Besides, a buffermember (e.g., sponge, foam, rubber, or a shock absorbing pad, etc.) maybe disposed on the inner side of the protective cover 56. When theprotective cover 56 is located at the closed position as shown in FIG.2D, the buffer member may prevent the drone 10 from hopping or wobblingand hitting and thus being damaged by the protective cover 56.

Meanwhile, referring to FIG. 4B, when the drone 10 is placed on theplatform 58, a specific inclined angle D is formed between the legholder 12B of the drone 10 and the horizontal plate of the platform 58,and the inclined angle D is less than 90 degrees (e.g., 60, 75, or 45degrees, etc.) With the leg holder 12B contacting the positioningmechanism 553 (taking the longitudinal movement member 5532 and thelateral movement member 5531 as an example) at the inclined angle D, thefixing and support can be reinforced, so the drone 10 is not moved anddamaged due to the shock of the moving vehicle 57. Besides, buffermembers (e.g., sponge, foam, rubber, or shock absorbing pads, etc.) aredisposed at the leg holder 12B and the positioning mechanism 553. Whenthe positioning mechanism 553 is located at the second position shown inFIG. 4B, the buffer member (covering the outer surface of thepositioning mechanism 553, for example) of the positioning mechanism 553abuts against buffer members 121 of the leg holders 12A and 12B of thedrone 10. With the multiple shock suppressing mechanism, the stabilityand the safety of the drone 10 can be effectively reinforced during theprocess in which the moving vehicle 57 moves.

The processor 59 is coupled to the communication transceiver 51, theinput apparatus 52, the satellite positioner 53, the IR positioner 54,the positioning apparatus 55, the protective cover 56, and the movingvehicle 57, and may be a central processing unit (CPU), amicrocontroller, a chip programmable controller, an application-specificintegrated circuit (ASIC), a field programmable gate array (FPGA), othersimilar components, or a combination thereof. In the embodiment, theprocessor 59 serves to control all the operations of the base station50.

For the ease of understanding the operation processes according to theembodiments of the invention, various embodiments are provided in thefollowing to describe the operation processes of the monitoring system 1according to the embodiments of the invention in detail. In thefollowing, a method according to the embodiments of the invention isdescribed with reference to the respective apparatuses in the monitoringsystem 1 and the respective components and modules in the drone 10 andthe base station 50. The respective processes of the method may beadjusted according to the implementation details and shall not belimited to the descriptions made herein.

FIGS. 5A to 5D are schematic views illustrating that the drone 10 setsoff to patrol according to an embodiment of the invention. Referring toFIG. 5A, in a process when the moving vehicle 50 is moving or remainsstill, the input apparatus 52 receives a remote control operation of theuser (e.g., an operation of choosing to set off for patrolling, anoperation of releasing the fixed drone 10, etc.). Accordingly, theprocessor 59 opens the left and right covers 591 (e.g., moving inopposite directions to the open position as shown in the drawing)according to the remote control operation instructed by the user, so asto expose the platform 58. At this time, the positioning mechanism 553is still located at the second position, and the leg holders 12A and 12Bare still held by the positioning mechanism 553, so as to fix the drone10. Referring to FIG. 5B, the positioning controller 551 controls themovement members 5531 and 5532 to move from the second position to thefirst position. At this time, the moving components 5531 and 5532 aredistant from the drone 10. In other words, the drone 10 is not fixed bythe movement members 5531 and 5532. Referring to FIG. 5C, thecommunication transceiver 11 of the drone 10 receives a remote controloperation from the base station 50 or a remote controller and may thusleave the platform 58 for a cruising assignment. For the ease ofmovement, when the distance between the drone 10 and the base station 50is greater than a threshold (e.g., 10 m, 15 m, 20 m, etc.) or whenreceiving the user's remote control operation relating to closing theprotective cover 56, the processor 59 may control the left and rightcovers 561 to move along two opposite directions toward each other tothe closed position (as shown in FIG. 5D).

FIGS. 6A to 6F are schematic views illustrating that the drone 10returns according to an embodiment of the invention. Return positioningaccording to the embodiments of the invention includes three processes.Referring to FIG. 6A, the first process is satellite positioning. Whenreturning based on a specific return condition (e.g., the power capacityof the battery of the drone 10 is lower than a threshold, the drone 10receives a command from the base station 50, the drone 10 has checkedall the patrol points, etc.), the drone 10 may approach the base station50 according to the location information of the base station 50. Itshould be noted that the satellite positioner 53 of the base station 50may obtain the location information of the base station 50 (e.g.,longitude and latitude, a relative position with respect to a specifictarget, etc.), and transmit the location information to the drone 10through the communication transceiver 51. The processor 19 of the drone10 may obtain the location information of the drone 10 through thesatellite positioner 13, and may compare the location information withthe location information of the base station 50, so as to determine thedirection and the route of flight. As the base station 50 may be moving,the base station 50 may adjust the frequency of transmitting thelocation information according to the actual situation, so that thedrone 10 can move toward and approach the base station 50 moreaccurately. Alternatively, if a specific route has been instructed, thebase station 50 may also directly transmit the information of the routeto the drone 10, so that the drone 10 may track more conveniently.

Referring to FIG. 6B, the second process is IR positioning. When thedistance between the drone 10 and the base station 50 meets a specificrange (e.g., within 10 m, 15 m, or 30 m, etc.) (i.e., when the distancetherebetween is less than a threshold), the processor 19 may control theleft and right covers 561 to move to the open position (as shown in thedrawing). The processor 59 also controls the IR positioner 54 to emit aninfrared ray. The processor 19 of the drone 10 may determine therelative position with respect to the base station 50 according to thereceived infrared ray. The processor 59 may transmit a movement-relatedcontrol command to the drone 10 through the communication transceiver 51and thereby control the drone 10 to keep moving toward the platform 58and eventually land the drone 10 on the platform 58 of the base station50 (as shown in FIG. 6C). In an embodiment, if the charging port (whichmay be a contact type charging port or a wireless charging port, and isconnected to a power source) is located at a specific position of theplatform 58, the IR positioner 54 may further provide a directionalpattern through the infrared ray to assist the drone 10 in rotating to aspecific direction. In an embodiment, adjusting the direction of thedrone 10 allows the charging electrode (e.g., disposed at the legholder) of the drone 10 to contact the charging port of the base station50. It should be noted that, since the base station 50 may be moving,the time period that the drone 10 adjusts the orientation/direction orspeed according to the infrared ray may be shorter than a specific time(e.g., 500 milliseconds, 1 second, etc.).

Referring to FIG. 6D, the third process is mechanical positioning. Theleft-right direction on the surface of the drawing is defined as thelateral direction, and the upper-lower direction on the surface of thedrawing is defined as the longitudinal direction. The mechanicalpositioning includes two steps. The first step is longitudinalpositioning, and the second step is lateral positioning. However, theinvention is not limited thereto. When the drone 10 is placed on theplatform 58, the positioning controller 551 controls the longitudinalmovement member 5532 to move toward a relative direction D1, so as topush the drone 10 toward the longitudinal center of the platform 58.Meanwhile, the positioning controller 551 controls the lateral movementmember 5531 to move toward a relative direction D2 (perpendicular to therelative direction D1), so as to push the drone 10 and move the drone 10to the lateral center of the platform 58. Lastly, as shown in FIG. 6E,the movement members 5531 and 5532 are located at the second position,the drone 10 is moved to a specific position, and the movement members5531 and 5532 hold and fix the leg holders 12A and 12B of the drone 10(e.g., the movement members 5531 and 5532 abut against the leg holders12A and 12B of the drone 10 as shown in FIG. 4B). Besides, the legholders 12A and 12B of the drone 10 form the specific inclined angle Dwith respect to the horizontal plate of the platform 58, so that thedrone 10 can stand stably on the platform 58 and the positioningmechanism 553 can more conveniently fix the drone 10. Besides, when themovement members 5531 and 5532 are located at the second position, theprocessor 59 controls the left and right covers 561 to move to theclosed position (as shown in FIG. 6F).

It should be noted that the positioning mechanism 553 may have variousmodifications. For example, the movement members may form a triangle, apentagon, other geometric patterns, an automatic holding apparatus, or amagnetic attachment apparatus, etc.

The base station 50 according to the embodiments of the invention caneasily move to different monitoring fields and does not require anysetting in the field. Also, the base station 50 can secure the drone 10on the platform 58 through the multiple fixing mechanism (i.e., thepositioning mechanism 553, the buffering apparatus 581, and the shockabsorber). In addition, through the three positioning processes, thedrone 10 may take off and be landed immediately when the moving vehicle57 is moving or remains still. Accordingly, the monitoring range of asingle drone 10 and the base station 50 can be expanded significantly.

The protective cover 56 may also have various modifications. FIGS. 7A to7B are schematic views illustrating the base station 50 according toanother embodiment of the invention. Referring to FIGS. 7A and 7B, theprotective cover 56 may include a front sliding door 562 and a rear taildoor 563. The front sliding door 562 is slidably disposed on theplatform 58 or the moving vehicle 57, and the rear tail door 563 ispivotally disposed to the platform 58 or the moving vehicle 57. Thefront sliding door 562 and the rear tail door 563 are also movablebetween the closed position (as shown in FIG. 7A) and the open position(as shown in FIG. 7B).

FIGS. 8A to 8D are schematic views illustrating that the drone 10 setsoff to patrol according to another embodiment of the invention.Referring to FIG. 8A, in response to the remote control operation of theuser, the processor 59 controls the rear tail door 563 to open. At thesame time, when the rear tail door 563 moves to a specific position, thecontroller 59 controls the front sliding door 562 to slide toward thefront of the moving vehicle 57 (e.g., moving in a direction opposite tothe direction in which the rear tail door 563 is opened, as shown inFIG. 8B) and open, so as to expose the drone 10. Then, referring to FIG.8C, the drone 10 may then leave the platform 58. When the distancebetween the drone 10 and the base station 50 is greater than a threshold(e.g., 10 m, 15 m, 20 m, etc.) or when receiving the user's remotecontrol operation relating to closing the protective cover 56, theprocessor 59 may control the front sliding door 562 and the rear taildoor 563 to close (moving in opposite directions to the closed positionas shown in FIG. 8D).

FIGS. 9A to 9E are schematic views illustrating that the drone 10returns according to another embodiment of the invention. Referring toFIG. 9A, when the drone 10 follows the location information of the basestation 50 and the distance is less than a specific threshold (e.g., 10m, 15 m, or 30 m, etc.), the processor 59 controls the rear tail door563 to open. At the same time or when the rear tail door 563 moves to aspecific position, the processor 59 controls the front sliding door 562to slide and open (as shown in FIG. 9B), so as to expose the platform58. Referring to FIG. 9C, the drone 10 may be landed on the platform 58through the IR positioning process. Then, the processor 59 may controlthe front sliding door 562 to slide and close (as shown in FIG. 9D). Itshould be noted that the positioning mechanism 553 may be disposed onthe front sliding door 562, so as to fix the drone 10 after being linkedwith the front sliding door 562. At the same time or when the frontsliding door 562 is moved to a specific position, the processor 59controls the rear tail door 563 to close (as shown in FIG. 9E), so thatthe drone 10 is protected by the base station 50. Compared with theembodiment shown in FIG. 2B, in which the protective cover is openedlaterally, the movement of the front sliding door 562 and the rear taildoor 563 has less influence on the surrounding objects (e.g., othervehicles or equipment on the road) as the moving vehicle 57 moves.

In the above embodiments, for higher mobility, the main body of the basestation 50 can be moved by means of the moving vehicle 57. However, inother embodiments, the moving vehicle 57 may be omitted from the basestation 50. In other words, when the base station 50 is fixed at aspecific position, the positioning processes (i.e., the satellite, IR,and mechanical positioning) and the fixing mechanisms (i.e., the buffermember, the positioning mechanism 553, the buffering apparatus 581, theshock absorber, etc.) according to the embodiments of the inventionremain applicable.

In view of the foregoing, the monitoring system, the base station, andthe control method thereof according to the embodiments of the inventionat least demonstrate: (1) high convenience, (2) immediatetake-off/landing, (3) automatic positioning and return, (4) shocksuppressing, and (5) power system. Regarding (1), the base station canbe easily moved to various monitoring fields by means of the movingvehicle. Regarding (2), through satellite, IR, and mechanicalpositioning, the drone can take off and be landed immediately when themoving vehicle is moving or remains still. Regarding (3), the drone canbe released for cruising at Point A and automatically position, return,and be landed after the moving vehicle moves to Point B. Regarding (4),through the buffer member, the buffering apparatus, and the shockabsorber, the shock/impact taken when the drone is placed inside thebase station as the moving vehicle moves can be cancelled out. Regarding(5), a power source is provided to independently charge the drone.

The foregoing description of the preferred embodiments of the inventionhas been presented for purposes of illustration and description. It isnot intended to be exhaustive or to limit the invention to the preciseform or to exemplary embodiments disclosed. Accordingly, the foregoingdescription should be regarded as illustrative rather than restrictive.Obviously, many modifications and variations will be apparent topractitioners skilled in this art. The embodiments are chosen anddescribed in order to best explain the principles of the invention andits best mode practical application, thereby to enable persons skilledin the art to understand the invention for various embodiments and withvarious modifications as are suited to the particular use orimplementation contemplated. It is intended that the scope of theinvention be defined by the claims appended hereto and their equivalentsin which all terms are meant in their broadest reasonable sense unlessotherwise indicated. Therefore, the term “the invention”, “the presentinvention” or the like does not necessarily limit the claim scope to aspecific embodiment, and the reference to particularly preferredexemplary embodiments of the invention does not imply a limitation onthe invention, and no such limitation is to be inferred. The inventionis limited only by the spirit and scope of the appended claims. Theabstract of the disclosure is provided to comply with the rulesrequiring an abstract, which will allow a searcher to quickly ascertainthe subject matter of the technical disclosure of any patent issued fromthis disclosure. It is submitted with the understanding that it will notbe used to interpret or limit the scope or meaning of the claims. Anyadvantages and benefits described may not apply to all embodiments ofthe invention. It should be appreciated that variations may be made inthe embodiments described by persons skilled in the art withoutdeparting from the scope of the present invention as defined by thefollowing claims. Moreover, no element and component in the presentdisclosure is intended to be dedicated to the public regardless ofwhether the element or component is explicitly recited in the followingclaims.

What is claimed is:
 1. A monitoring system, comprising a drone and abase station, wherein: the drone comprises: a main body; and at leasttwo leg holders, extending from the main body; and the base stationcomprises: a platform, having a horizontal plate, wherein the platformis adapted to be parked by a drone; and a positioning mechanism,comprising: at least two movement members, movably disposed on theplatform and being movable between a first position and a secondposition, wherein when the at least two movement members are located atthe second position, the at least two movement members hold and fix theat least two leg holders of the drone, each of the at least two legholders forms an inclined angle with respect to the horizontal plate,and the inclined angle is less than 90 degrees.
 2. The monitoring systemas claimed in claim 1, wherein when the at least two movement membersare located at the second position, the at least two movement membersabut against the leg holders of the drone placed on the platform.
 3. Themonitoring system as claimed in claim 1, wherein the at least twomovement member comprise: at least one longitudinal movement member,adapted to be longitudinally movably disposed on the platform; and atleast one lateral movement member, adapted to be laterally movablydisposed on the platform, wherein when the drone is placed on theplatform, the at least one longitudinal movement member and the at leastone lateral movement member move from the first position to the secondposition and push the drone.
 4. The monitoring system as claimed inclaim 1, wherein when the at least two movement members move from thesecond position to the first position, the at least two movement membersare distant from the drone.
 5. The monitoring system as claimed in claim1, wherein the at least two movement members and the at least two legholders comprise buffer members, and when the at least two movementmembers are located at the second position, the buffer members of the atleast two movement members abut against the buffer members of the legholders of the drone placed on the platform.
 6. The monitoring system asclaimed in claim 1, wherein the base station further comprises: a movingvehicle, wherein the platform is disposed on the moving vehicle.
 7. Themonitoring system as claimed in claim 6, wherein the base stationfurther comprises: a buffering apparatus, provided between the platformand the moving vehicle.
 8. The monitoring system as claimed in claim 6,wherein the moving vehicle comprises: a vehicle main body, wherein theplatform is disposed on the vehicle main body; and at least one shockabsorber, disposed on the vehicle main body.
 9. The monitoring system asclaimed in claim 1, wherein the base station further comprises: aprotective cover, adapted to be movably disposed on the platform and bemovable between a closed position and an open position to shield or openthe platform, wherein a buffer member is provided on an inner side ofthe protective cover.
 10. A base station, comprising: a platform, havinga horizontal plate, wherein the platform is adapted to be parked by adrone, and the drone comprises a main body and at least two leg holders;and a positioning mechanism, comprising: at least two movement members,movably disposed on the platform and being movable between a firstposition and a second position, wherein when the at least two movementmembers are located at the second position, the at least two movementmembers hold and fix the at least two leg holders of the drone, each ofthe at least two leg holders forms an inclined angle with respect to thehorizontal plate, and the inclined angle is less than 90 degrees. 11.The base station as claimed in claim 10, wherein when the at least twomovement members are located at the second position, the at least twomovement members abut against the leg holders of the drone placed on theplatform.
 12. The base station as claimed in claim 10, wherein the atleast two movement member comprise: at least one longitudinal movementmember, adapted to be longitudinally movably disposed on the platform;and at least one lateral movement member, adapted to be laterallymovably disposed on the platform, wherein when the drone is placed onthe platform, the at least one longitudinal movement member and the atleast one lateral movement member move from the first position to thesecond position and push the drone.
 13. The base station as claimed inclaim 10, wherein when the at least two movement members move from thesecond position to the first position, the at least two movement membersare distant from the drone.
 14. The base station as claimed in claim 10,wherein the at least two movement members comprise buffer members, andwhen the at least two movement members are located at the secondposition, the buffer members of the at least two movement members abutagainst the leg holders of the drone placed on the platform.
 15. Thebase station as claimed in claim 10, further comprising: a movingvehicle, wherein the platform is disposed on the moving vehicle.
 16. Thebase station as claimed in claim 14, further comprising: a bufferingapparatus, provided between the platform and the moving vehicle.
 17. Thebase station as claimed in claim 14, wherein the moving vehiclecomprises: a vehicle main body, wherein the platform is disposed on thevehicle main body; and at least one shock absorber, disposed on thevehicle main body.
 18. The base station as claimed in claim 14, furthercomprising: a protective cover, adapted to be movably disposed on theplatform and be movable between a closed position and an open positionto shield or open the platform, wherein a buffer member is provided onan inner side of the protective cover.
 19. A control method, comprising:controlling to place a drone on a platform, wherein the drone comprisesa main body and at least two leg holders, and the platform has ahorizontal plate; and in response to the drone being placed on theplatform, controlling at least two movement members disposed on theplatform to move from a first position to a second position, wherein:when the at least two movement members are located at the secondposition, the at least two movement members hold and fix the at leasttwo leg holders of the drone, each of the at least two leg holders formsan inclined angle with respect to the horizontal plate, and the inclinedangle is less than 90 degrees.
 20. The control method as claimed inclaim 19, wherein the at least two movement members comprise at leastone longitudinal movement member adapted to be longitudinally movablydisposed on the platform and at least one lateral movement memberadapted to be laterally movably disposed on the platform, andcontrolling the at least two movement members disposed on the platformto move from the first position to the second position comprises: inresponse to the drone being placed on the platform, controlling the atleast one longitudinal movement member and the at least one lateralmovement member to move from the first position to the second positionand push the drone.
 21. The control method as claimed in claim 19,further comprising: controlling the at least two movement members to bedistant from the drone placed on the platform.
 22. The control method asclaimed in claim 19, further comprising: providing a moving vehicle,wherein the platform is disposed on the moving vehicle; and controllingthe moving vehicle to move.